Enum CallError 

pub enum CallError {
    Serialization(String),
    Deserialization(String),
    Plugin(PluginError),
    Panic(String),
    BufferTooSmall,
    NotImplemented {
        bit: u32,
    },
    InvalidMethodIndex {
        index: usize,
        count: u32,
    },
    UnknownStatus {
        code: i32,
    },
    WireModeMismatch {
        method: String,
        declared: bool,
        attempted: bool,
    },
    Backend {
        runtime: String,
        message: String,
    },
    MalformedFrame(String),
    StreamAborted,
}

Errors that can occur when calling a plugin method.

Variants

Serialization(String)

Deserialization(String)

Plugin(PluginError)

Panic(String)

BufferTooSmall

NotImplemented

Optional method is not implemented by this plugin — its capability bit is unset. Returned when a method marked #[optional] is called on a plugin that chose not to implement it. Not returned for out-of-range method indices; see InvalidMethodIndex.

Fields

bit: u32

InvalidMethodIndex

Fields

index: usize

count: u32

UnknownStatus

Fields

code: i32

WireModeMismatch

A method was dispatched through the wrong wire path — a #[wire(raw)] method called via the typed path, or vice versa. Backend-agnostic: the Python and (future) WASM executors both enforce the raw/typed split.

Fields

method: String

declared: bool

attempted: bool

Backend

A runtime-level fault originating inside an execution backend that is not a plugin-raised PluginError — e.g. a future WASM trap (unreachable, out-of-bounds) or an interpreter-level failure. Carries the backend’s runtime name and a message. Plugin-raised errors (Python exceptions included) stay in CallError::Plugin so their structured code/message/details (including tracebacks) round-trip.

Fields

runtime: String

message: String

MalformedFrame(String)

A streaming backend produced bytes that did not decode as a valid fidius_core::frame::Frame (bad tag, truncated, malformed payload). Distinct from CallError::Deserialization, which is about an item’s contents; this is about the framing around items. (FIDIUS-I-0026.)

StreamAborted

A stream ended without a terminal END/ERROR frame — the producer went away mid-stream (e.g. a dropped backend task, a crashed interpreter, a closed channel). (FIDIUS-I-0026.)

Trait Implementations

impl Debug for CallError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for CallError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for CallError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.